The different between skunk and cannabis is not only the name some of my friends say that skunk is cannabis with vary vary small dose of heroine but i dont think its true because i have never had physical crisis after smoking it (ofc i had psychical crisis) but with consuming the smallest dose of heroine few times ull become addicted. The different i have senced between those two is that the skunk doesnt stink like the normal canabis or ganja whatever u would like to call it, u almost cant smell it and when i take care for 10 $ sometimes my dealer gives me alot of ganja and sometimes he gives me small amount of it and he is always saying that that is skunk and i put small dose when i roll it and got stoned... so i think there is a different between those two...